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Finding the Fourth Proportional to 18,521.88, 27,770.46 and 10,205.88

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Solution

The fourth proportional to 18,521.88, 27,770.46 and 10,205.88 is: 15,302.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.88 : 27,770.46 = 10,205.88 : x
  2. Step 2: Convert to fraction form
    18,521.88/27,770.46 = 10,205.88/x
  3. Step 3: Cross multiply
    18,521.88x = 27,770.46 × 10,205.88
  4. Step 4: Simplify right side
    18,521.88x = 283,421,982.30
  5. Step 5: Solve for x
    x = 283,421,982.30/18,521.88
  6. Step 6: Final answer
    x = 15,302.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.